Well-fishing tool



July 28, 1925. n

. J. B. CLARK WELL FsHING TOOL 2 Sheets-'Sheet l CMC/@7W ATTORNEY WITNESS:

J. B. CLARK w ELL FISHING T'ooL July 28, 1925.

Filed April e, 1924 2 sheets-sheet 2 @Czar/ff INVENTOR ATTORNEY WITNESS:

ylinemaal July 2a, 1925.

WELL-FISHING Toor..

Application med Aprils, 1924. serien No. 705,092.

To all 'whom it 'may concern.'

Be it known that I, JAMES B.CLARK, a

' .'citizen of the United' States, -residing at Midwest, vin the county of lNatrona and Stateof W'yoln'ing',` have invented new and useful Improvements in Well-Fishing Tools,

of which the following is a specification.

This invention relates to tools for use in I fishing out lost tools from oil wells and the like and has for its object the provision of Y a novel tool for this purpose' which willv eliciently operate to perform its functions `re ardless of whether the, lost tools be abso utely free or whetherthey may have a certain amount of broken wire or cable atf Another object is the provision of va device of this character having a peculiar slip arrangement which operates automatically and which is provided with 'novel releasing An additional object is the provision of a device of this character which will be simple` and finexpensive in manufacture, easy touse, positive in action, efficient and durable in service and a general improve# the details of construction to be hereinafter. more' fully described and claimedv and illustrated in the accompanying drawings, in

which ,l I

Figurel is a side elevation of the tool, Figure2l is a longitudinalsection therethrough, if j y Figure 3 lis a cross section on the line 3-3 of Figure 2,

Aper i en the intermediate y .communicating with thefopen lower end, a a peculiarly shaped.Y ledge or flange-14 being Figure 4 is across section on the line 4 4 of Figure 2,`

Figure 5 is a cross section on the. line l5-50 Figure-2 and Figure 6`is a detail section showing-the flatch means on a larger scale.

Referring moreparticularly tothe drawings thenu-m'eral 10 designates a body which is Aelongated in sha e and formed vatfits up'- open and internally threaded as shownand rtion-13 ishollow and .PATENT OFFICE.

.uns B. GLARK, or MIDWEST, WYOMING. I"

v provided-near theopen end. This ledge has` its bottom surface formed as a nare shoul-v der 15 and has its upper su ace .16 inclined as shown. Traversing the body at the hollow central portion thereof is a vstop 17 for a purposeto-be described.

Screwedinto the open lower end 12 of the body is a reduced threaded extension 18 on a head 19 which carries partially circulardepending spring jaws 20. The head 18 is (portion of the vformed with a bore 21 which has its lower the body are slips 24 which are nearly semicircular in shape and which have square upper surfaces 25 and inclined lower surfaces26 co-operating with the inclined surface 16 of the ledge 14. Secured to and projecting upwardly from these slips are rods 27 which are slidable through recesses 28 in the upper portion ofV the body and which carry heads 29v resting upon coilspringsl 30 seated in' the recesses.I Screwed into the recesses, are grub screws-31 which engage the heads 29 for holding the slips 'down to a certain extent. Each rod 27 is formed in one side ,with a notch-32 normally engaged by a plunger or catch 33 slidable within a recess 34 inthe side of the body and urged` toward the'rod by a small spring which, in' turn isheld in adjusted posiconstitutea trigger device.

tionby a grub screw 36 all of 4which parts In the use 'of the device, it is lowered into` a well from which 'a losttool is to be re'- engage outwardly of any tools which might I be in the well so that the -tools will be-received between 'the jaws. Any,- loose ends of wire orcable attached to the losttools will be cutby theedges 23 at the stepped portion of the bore 21 vin the head 19. A` toolI engaged between the jaws will of course lenter and pass through the bore 21,*as'the device is lowered over theA tool, and the head or other-projection thereon will pass up between the slips 25, upward movement being limited by the transverse stop pin v17. The slips can move outwardly to a certain ex'- tent but when the weight of a tool head comes upon them upon subsequent raising surfaces 16 vof the l ge will cause the slips to be .moved together or toward each other,

thereby effecting a-clamping action on the tool being lifted out. The springs 30 permit vthe yielding action; The .purpose of the l catch device or plungers,v 33 is to hold the rods 27 initially in their uppermost positions.

From the foregoingdescriptionl and a study of the drawings it will bev apparent that I have thus provided a simply con'- structed, inexpensive and highly eiiicient device for recovering lost tools from wells. Owing to the simplicity of the construction and the fewness of the parts it is apparent that there is very little to get out of order so that the device should have a long and satisfactory life.

While I have shown and described the preferred embodiment of my invention it is of course to be understood that I reserve the right to make such'changes in the form,l construction and arrangement of parts as will not depart from the spirit of the invention or the scope4 of the subjoined claim.

I claim-z A' well lishing tool comprising an elon-d gated body lhaving' a hollow central portion and anopen lower end and provided intericrlywith a ledge having an inclined up-l ,i

per surface, and slips within the hollow portion of the body having inclined surfaces cooperating with the inclined surface of the ledge, rods carried by said slips and slid-- able through a portionof the body, heads on said rods, and coil springs engagingisaid heads for normally urging the slips upwardly, vscrew 'members engaging said heads for limiting the movement thereof, n

and spring pressed 'plungers slidable. laterally with .respect to said rods for'holding the same in adjusted position.

In testimony whereof I aiix my signature.

JAMES B. CLARK.' 

